WebDAV change domain/dav to something else


I am not 100%sure if this topic is already covered her, but I did not find an answer with the search function.

What I want to do is to change the domain/dav path to e.g. domain/chris for user chris. So there should be an own WebDAV directory per user on my domain. I have no idea where to change this. Is it in the scripts, I was not able to find parameters for this in the Virtualmin webconfig.

btw. I am using Virtualmin 3.99.gpl on Debian 6